2. Tut or i al Obj ec t i v es
» Explore the structure of the World Wide Web
» Learn the basic principles of Web documents
» Create a HTML document
» View an HTML file using a Web browser
» Use HTML tags for text, headings, paragraphs, and
lists
» Insert character tags into an HTML document
3. Tut or i al Obj ec t i v es
Cont i nued
» Insert an inline graphic image into a
HTML document
» Add special characters to an HTML
document
» Insert horizontal lines into an HTML
document
4. I nt r oduc i ng t he W l d W de
or
i
W
eb
» In order for computers to share
resources efficiently, they can be
linked together in one of the
following structured networks:
– linked within a local area network (LAN)
– linked across a wide area network (WAN)
» Networks are very useful, their use
led to a “network of networks”
called the Internet.
5. The I nt er net
» The Internet consists of millions of
interconnected computers that enable users to
communicate and share information.
» Many Internet tools required users to master an
array of terms, acronyms, and commands before
they could navigate the Internet.
» The World Wide Web was developed to make
the Internet easier to use and give quick access
to users.
6. St r uc t ur e of t he I nt er net
This figure shows the physical structure of the Internet, which uses fiber-optic cables,
satellites, phone lines, and other telecommunications media to send data back and forth.
7. The Dev el opm
ent of t he
W l d W de W
or
i
eb
» In 1989, Timothy Berners-Lee and other
researchers at the CERN nuclear research
facility, laid the foundation of the World Wide
Web, or the Web.
– created an information system that would make it easy for
researchers to locate and share data
– required minimal training and support
– developed a system of hypertext documents, electronic files
that contain elements that you can easily select
8. Hy per t ex t Doc um
ent s
» Hypertext offers a better way of locating
information.
» When you read a book, you follow a linear
progression, reading one page after
another.
» With hypertext, you progress through pages
in whatever way is best suited to you and
your objectives.
» Hypertext lets you skip from one topic to
another.
9. Hy per t ex t Doc um
ent s
Cont i nued
» The key to hypertext is the use of links, which you
activate to move from one topic to another.
– a link can open a document on a computer anywhere in the world
» Hypertext has become the dominate method of
sharing and retrieving information on the Internet,
becoming known as the World Wide Web, or the
Web.
» Documents on the Web are known as Web pages.
10. W Pages and W Br ows er s
eb
eb
» A Web page is stored on a Web
server, which makes the page
available to users of the Web.
» To view a Web page, the user runs a
Web browser, a software program
that retrieves the page and displays
it.
» A Web browser can either be textbased, or graphical.
11. W BROSERS
EB
–
–
–
–
–
» The most common Web browsers
available today are:
FIREFOX
GOOGLE CHROME
SAFARI
OPERA
IE
12. W Page wi t h I nt er es t i ng
eb
Font s , Gr aphi c s , and Lay out
This figure shows a Web page is
not only a source of information,
it can also be a work of art.
graphic image
links
interesting fonts
The Web designer has a great
deal of control over the format of
the page.
13. HTM
L: The Language of t he
W
eb
» Web pages are text files, written in a language
called Hypertext Markup Language or HTML.
» A markup language is a language used to
describe the contact and format of documents.
» HTML was developed from the Standard
Generalized Markup Language (SGML), a
language used for large-scale documents.
» SGML proved to be cumbersome and difficult,
thus HTML was created.
14. Hy per t ex t M k up Language
ar
( HTM
L)
» HTML allows Web authors to create
documents that can be displayed across
different operating systems.
» HTML code is easy to use, that even
nonprogrammers can learn to use it.
» HTML describes the format of Web
pages through the use of tags.
– it’s the job of the Web browser to interpret these tags
and render the text accordingly
15. Ver s i ons of HTM
L
This figure presents a history of the various versions of HTML that have been
released by the World Wide Web Consortium (W3C).
16. Hy per t ex t M k up
ar
Language ( HTM
L) Cont i nued
» HTML has a set of rules, called syntax.
– syntax are a set of standards or specifications developed
by a consortium of Web developers, programmers, and
authors called the World Wide Web Consortium (WC3)
» HTML extensions have been added to
support new features, which have been
adopted in subsequent sets of standards
released by the W3C.
– these extensions have provided Web page authors with
more options
17. W Dev el opm
eb
ent
» Web designers need to determine which browsers and
browser versions support their web pages.
» In the future, Web development is focusing more on
XML (Extensible Markup Language) and XHTML
(Extensible HyperText Markup Language) for
developing document content.
– XML combined with style sheets provides the same functionality as
HTML, but with greater flexibility
– XHTML was designed to overcome some of the problems with
competing HTML standards
18. Tool s f or Cr eat i ng HTM
L
Doc um
ent s
» HTML documents are text files, which a
text editor such as Windows NotePad
can be used to create.
» You can also use an HTML converter or
an HTML editor.
– an HTML converter like Microsoft Word takes text
in one format and converts it to HTML code
– an HTML editor helps you create an HTML file by
inserting HTML codes for you as you work
19. Cr eat i ng an HTM Doc um
L
ent
It’s always a
good idea to
plan the
appearance of
your Web page
before you start
writing code.
heading 1
image
paragraph
horizontal line
list
heading 3
bold and italic
text
20. HTM Sy nt ax
L
» Document content is what the users sees
on the page, such as headings and images.
» Tags are the HTML codes that control the
appearance of the document content.
– tag is the name of the HTML tag
– attributes are properties of the tag
– document content is actual content that appears in the
Web page
21. HTM Tags
L
» Tags can be one-sided or two-sided.
– two-sided tags contain an opening tag <b> that tells
the browser to turn on a feature and apply it to the
contact that follows, and a closing tag </b> that
turns off the feature
– one-sided tags are used to insert noncharacter data
into the Web page, such as a graphic image or video
clip <tag attribute>
» Tags are not case sensitive. The current
standard is to display all tags in
lowercase letters.
22. I nt er pr et at i on of t he <H1>
t ag by Di f f er ent Br ows er s
This figure shows how three different browsers might interpret a line of HTML code.
23. I ni t i al HTM Tags i n
L
Not epad
Your text editor may not display the file extension
in the title bar. This is okay.
<html> tag
indicates that
this file is
written in
HTML
<head> tag
contains
information about
the Web page
<title> tag contains
the Web page title
Page content will
go between the
<body> tags
24. The I ni t i al HTM Fi l e i n
L
I nt er net Ex pl or er
the title you
entered between
the <title>
tags
address box
indicates the
name and
location of the
HTML file
page content will
appear here
You should occasionally
view the formatted page
with different Web
browsers to check
compatibility, verify
that there are no syntax
errors, or other
problems.
25. Cr eat i ng Headi ng Tags
» HTML supports six levels of headings,
numbered <h1> through <h6>, with
<h1> being the largest and most
prominent.
» Headings are always displayed in a
bold font.
26. Si x Headi ng Lev el s
This figure
illustrates the
general
appearance of the
six heading styles.
Your browser
might use slightly
different fonts and
sizes.
27. Ent er i ng Headi ng Tags and
Tex t
heading tags
As of HTML 3.2, the heading tag can
contain additional attributes, one of
which is the alignment attribute.
28. Headi ngs As They Appear
i n t he Br ows er
<h1>
<h2>
<h3>
29. Ent er i ng Par agr aph Tex t
If you are using a test editor
like NotePad, the text might
not wrap to the next line
automatically.
Selecting the Word Wrap
command within NotePad will
allow you to see all the text on
your screen.
32. The Par agr aphs Di s pl ay ed
by t he Br ows er
Remember:
HTML formats
text only through
the use of tags
and ignores such
things as extra
blank spaces,
blank lines, or
tabs.
four grading
paragraphs
are not
separated
33. The Gr adi ng Tex t Separ at ed
i nt o Par agr aphs
To add space
between
paragraphs,
you use the
paragraph tag
<p>.
text is now
separated
into four
paragraphs
34. Cr eat i ng Li s t s
» HTML supports three kinds of lists:
– an ordered list, which is used to display
information in a numeric order
– an unordered list, which list items are not listed
in a particular order i.e. bullets
– a definition list, which is a list of terms, each
followed by a definition line that is typically
indented slightly to the right
35. Ent er i ng an Unor der ed Li s t
<ul> unordered
list tag
<li> list
item tag
36. The Unor der ed Li s t i n t he
Br ows er
An unordered
list is a bulleted
list.
unordered
list
37. Cr eat i ng Char ac t er Tags
» HTML also lets you format individual
characters.
» A tag that you apply to an individual
character is called a character tag.
There are two types of character tags:
– logical character tag
– physical character tag
38. Com on Logi c al Char ac t er
m
Tags
This figure lists some common logical character tags.
39. Com on Phy s i c al Char ac t er
m
Tags
This figure shows examples of how these tags can be displayed in a browser.
40. Logi c al Char ac t er Tags as
They Appear i n t he Br ows er
examples of
individual
tags
example of
combined
tags
41. Phy s i c al Char ac t er Tags as
They Appear i n t he Br ows er
Underline text
can sometimes be
confused with
hyperlinked text
(which is usually
underlined), and
for that reason,
use of the <u> tag
is discouraged.
42. Appl y i ng Char ac t er Tags
Italic <i> </i>
and bold
<b> </b>
character tags
If you support
users with older
browsers, you
should use a logical
tag. Otherwise, use
physical tags,
which are more
common and easier
to interpret.
43. The Ef f ec t of t he Char ac t er
Tags
i n t he Br ows er
text
formatted
with bold
and italic
44. I ns er t i ng a Gr aphi c
» Images can be displayed in two ways: as inline
images or as external images.
– an inline image displays directly on the Web page and is
displayed when the page is accessed by a user
– an inline image can be placed on a separate line in your HTML
code, or it can be placed directly within a line of text
– inline images should be in one of two file formats: GIF (Graphics
Interchange Format) or JPEG (Joint Photographic Experts
Group)
45. I ns er t i ng a Gr aphi c
Cont i nued
– an external image is not displayed with the Web
page, the browser must have a file viewer, which
is a separate program that the browser launches
when it encounters an external image file
– external images are represented by an icon that a
user clicks to view the image
– external images are not limited to GIF or JPEG
formats
46. I ns er t i ng a Gr aphi c
Image file
dube.jpg
use the <p>
tag so you
can center
the image
47. The I m
age Fi l e as i t
Appear s
i n t he Br ows er
49. Spec i al Char ac t er s and
Codes
This figure shows some HTML symbols and the corresponding code numbers or names.
50. Spec i al Char ac t er s i n t he
Br ows er
This figure shows an example of the code “Welcome to Mr. Dubé’s
Web site”, which accented the é in his last name..
accented é added
to last name
51. I ns er t i ng Hor i z ont al Li nes
» A horizontal line can improve the
appearance of a Web page.
» The syntax for creating a horizontal
line is:
<hr align=“align” size=“size”
width=“width” color=“color”
noshade>
52. I ns er t i ng Hor i z ont al Li nes
» The HTML horizontal syntax includes the following:
– align specifies the horizontal alignment of the line on the
page (center, left, or right)
– size specifies the height of the line in pixels or percentage
of the screen width
– width indicates the width of the line in pixels or
percentage of the screen width
– color indicates the color of the line
– noshade specifies that the browser display a solid line
53. Di f f er ent Li ne St y l es
size=12
width-100%
size=6
width-50%
size=3
width-25%
size=1
width-10%
<hr align=“center” size=“12” width=“100%”>
<hr align=“center” size=“6” width=“50%”>
<hr align=“center” size=“3” width=“25%”>
<hr align=“center” size=“1” width=“10%”>
You can use line
styles to improve the
appearance of your
Web page.
54. Hor i z ont al Li ne Added t o
t he Page
horizontal line
